Congenital Heart Disease in the Cat- Pulmonic Stenosis

Pulmonic stenosis (PS) is a narrowing of the valve or area above or below the valve.  Like SAS,Congenital Heart Disease in the Cat- Pulmonic Stenosis fixed PS is extremely rare in cats, accounting for only 2% of congenital heart disease in cats.  Blood flow out of the right ventricle into the pulmonary artery is difficult due to the narrowing.  The heart must work harder, and congestive heart failure develops.  Click here to learn about the normal functioning of a cat heart.

Treatment is surgical intervention using a balloon catheter to dilate the stenotic (narrowed) valve (balloon valvuloplasty).  Medical management of congestive heart failure is used when surgical intervention is not possible.  Although this disease is rare in cats, balloon valvuloplasty has been used with some success.  This disease is not typically found until clinical signs have progressed.  Prognosis increases in the absence of other heart conditions.

Schrope DP. Primary pulmonic infundibular stenosis in 12 cats: natural history and the effects of balloon valvuloplasty. J Vet Cardiol. 2008 Jun;10(1):33-43. Epub 2008 May 21.

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Dr Roger Johnson and Dr Kyle Marano

Roger K. Johnson, DVM, Diplomate ACVIM (internal medicine) is a board-certified veterinary internal medicine specialist. His professional interests include cardiology as well as using advanced diagnostics to help his patients. His particular favorites include echocardiography, abdominal ultrasonography, and endoscopy. Kyle Marano, DVM is a small animal veterinarian practicing out of Northern Colorado. He has written pieces ranging from sports commentary and analysis to quips on the every day life of veterinary medicine. His furry family includes a chocolate lab mix and an overly nosy cat.

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